Hi,
I don't think it is possible to get all the optimal solutions. The function returns one of the solutions. Also, the following functions used have been removed from MATLAB:
An updated code would be:
W = [1 4 3 3 9 7 5 10 5 8 6];
a=[1 2 4 2 1 1 1 6 3 5 2];
b=[2 4 6 5 5 4 3 3 4 4 3];
G = graph(a,b,W);
p = plot(G,'EdgeLabel',G.Edges.Weight);
T = minspantree(G, 'Method','sparse', 'Type','forest');
highlight(p,T);
Here also, you will see that only one tree is returned. If there are multiple connected components, use Type as forest. Otherwise, use the Type tree for a given root node.
